Marchal, Lise;Garcia‐Franco, Noelia;Gateuille, David;Colocho Hurtarte, Luis Carlos;Just, Christopher;Naffrechoux, Emmanuel;Wiesmeier, Martin;Poulenard, Jérôme Polycyclic Aromatic Hydrocarbon Contents in Soil Organic Matter Fractions Along an Elevation Gradient in the French Alps European Journal of Soil Science 2025 76 1